body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f1ec;
}

.site-header {
  background: #263238;
  color: white;
  text-align: center;
  padding: 30px;
}

.container {
  width: 90%;
  max-width: 900px;
  margin: 30px auto;
}

.app-card {
  background: white;
  padding: 20px;
  margin-bottom: 30px;
  border-radius: 10px;
}

input, select {
  display: block;
  margin: 8px 0;
  padding: 10px;
  width: 100%;
}

button {
  padding: 10px;
  background: #7a4d2d;
  color: white;
  border: none;
}

.result-box {
  margin-top: 15px;
  padding: 10px;
  background: #f7efe3;
}

hr {
  margin: 30px 0;
}